/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package com.controlador;

import com.modelo.DAO.TrabajadorDAO;
import com.modelo.entidad.Trabajador;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Cynthia
 */
public class Controlador extends HttpServlet {

    TrabajadorDAO tdao;
    
    @Override
    public void destroy() {
        tdao.closeEntityManager();
    }

    @Override
    public void init() throws ServletException {
        tdao = new TrabajadorDAO();
    }
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */


    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        
        String operacion = request.
                getParameter("operacion");
        if(operacion.equalsIgnoreCase("insertar")){
            response.sendRedirect("formulario.jsp");
        }
        else if(operacion.equalsIgnoreCase("busqueda")){
            response.sendRedirect("busqueda.jsp");
        }
        else if(operacion.equalsIgnoreCase("listado")){
                request.setAttribute("trabajadores",
                        tdao.getListaTrabajadores());
                RequestDispatcher rd = request.
                        getRequestDispatcher("/lista_trabajadores.jsp");
                rd.forward(request, response);
        }else if(operacion.equalsIgnoreCase("guardar")){
            String codigo = request.getParameter("codigo");
            String nombres = request.getParameter("nombre");
            String cargo = request.getParameter("cargo");

            Trabajador t = new Trabajador();
            t.setIdTrabajador(codigo);
            t.setNombres(nombres);
            t.setCargo(cargo);

            if(tdao.insertarTrabajador(t))
                response.sendRedirect("exito.jsp");
            else
                response.sendRedirect("error.jsp");
        }
        else if(operacion.equalsIgnoreCase("buscar")){
                String codigo = request.getParameter("codigo");
                Trabajador t = tdao.
                        buscarTrabajador(codigo);
                if(t==null)
                    response.sendRedirect("found.jsp");
                else{
                    request.setAttribute("trab",t);
                    RequestDispatcher rd = request.
                            getRequestDispatcher("/ver_trabajador.jsp");
                    rd.forward(request, response);
                }

        }else if(operacion.equalsIgnoreCase("eliminar")){
            String codigo = request.getParameter("codigo");

            if(tdao.eliminaTrabajador(codigo))
                response.sendRedirect("exito.jsp");
            else
                response.sendRedirect("error.jsp");
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
